On a SN8600B i see a lot of errors of the type fec_uncor_detected
There are no CRC errors, nor any other physically layers errors logged
frames enc crc crc too too bad enc disc link loss loss frjt fbsy c3timeout pcs uncor
tx rx in err g_eof shrt long eof out c3 fail sync sig tx rx err err
306: 267.4k 156.0k 0 0 0 0 0 0 0 1 2.4k 1.2k 0 0 0 0 0 0 44.8k
fec_cor_detected 17790 Count of blocks that were corrected by FEC
fec_uncor_detected 44860 Count of blocks that were left uncorrected by FEC
What could be the cause of the increase of this error ?
can you check the bad_os counter in the portstasshow for the same port? You do not have any PCS errors, so it leave the bad_os. Further, this link is not stable or good - you have 2400 link failure and 1200 synchronization loss. Physical layers, cable or SFPs.